My friends civic del slow got stolen from his house yesterday and found burnt up in the woods (i know its kinda funny

) and i'm worried my car may be stolen so i was thinking about getting that Lojack put in. I need to know if anyone has it in their car or if it even works. Does it require a one time payment or do u pay monthly for service? I just don't wanna pay money for something that doesn't work well or is pointless